Pen



1. Pen

1.1 is a top and side perspective view of a pen showing my new design;

1.2 is a front elevation view thereof;

1.3 is a side elevation view thereof;

1.4 is a top plan view thereof, the bottom plan view being a mirror image;

1.5 is a partially exploded side elevation view thereof with the cap removed;

1.6 is a fully exploded top and front perspective view thereof;

1.7 is a perspective view thereof wherein the pen is shown configured with other pens into a pyramid structure;

1.8 is a perspective view thereof wherein the pen is shown configured with other pens and objects; and

1.9 is a perspective view thereof wherein the pen is shown configured with other pens into a cube structure.

The broken lines in the drawings illustrate portions of the pen and environmental subject matter of additional pens, paperclips, and a ruler that do not form part of the claimed design. 

CLAIM The ornamental design for a pen, as shown and described. 